Rated at 315 kW with 4 poles and a 1500 rpm speed, this IE3 cast iron three-phase motor sits in the power class chosen for heavy drives that call for roughly 430 HP of mechanical output. The segment is built for applications that turn continuously under high load, such as large pump stations, crusher drives and high-flow fans.

Where the 315 kW Class Fits

315 kW is one of the upper steps of the industrial motor range and usually demands particular attention to starting current, cooling and mechanical balance. The 1500 rpm rating comes from the 4-pole design and offers an input speed well suited to many machines through a gearbox or belt-and-pulley drive. At this output the vibration and thermal behaviour of the frame directly affect motor life.

The Role of the Cast Iron Frame

At this power level the frame is produced in cast iron; its mass and damping capability reduce vibration, balance bearing loads and dissipate heat more steadily from the surface. IP55 protection guards against dust and water jets, while Class F insulation leaves a safe margin at high load temperatures.

Efficiency and Duty Type

The IE3 Premium efficiency class matters here because annual energy use is large at this output; even a small efficiency gap represents meaningful energy in absolute loss. The S1 continuous duty rating shows the motor is suited to uninterrupted running at rated load. It connects to a standard 400 V / 50 Hz supply.

Adapting the 315 kW Motor to the Project

At this scale, selection is handled together with mounting type (B3 foot is common), starting method and drive compatibility. As an Izmir-based supplier, DRG Motor configures the 315 kW IE3 cast iron three-phase motor to project needs and supports speed, frame and delivery choices at the quotation stage.